Department of Computer Science and Engineering
Microsoft Research Faculty Fellow
Sloan Foundation Research Fellow
University of Washington
Seattle, WA 98195
Paul G. Allen Center, Room 576
(206) 543-1896 [phone], (206) 616-3804 [fax]
Our research group: sampa.
My official UW CSE webpage, and my constantly semi-up-to-date CV.
An overview of our work on approximate computing can be found here.
CSE590G Architecture Seminar (ongoing)
Coursera The Hardware/Software Interface, Spring 2013. Summer 2014.
CSE351 The Hardware/Software Interface, Spring 2013
CSEP548 Computer Systems Architecture (PMP), Fall 2012
CSE351 The Hardware/Software Interface, Fall 2011
CSE351 The Hardware/Software Interface, Spring 2011
CSEP548 Computer Systems Architecture, Winter 2011
CSE378 Machine Organization & Assembly Language, Spring 2010
CSE548 Computer Systems Architecture, Winter 2010
CSEP548 Computer Systems Architecture (PMP), Spring 2009
CSE378 Machine Organization & Assembly Language, Winter 2009
CSE599Q Topics in Multiprocessor Programmability, Spring 2008
CSE590P Programming Systems Seminar, Winter 2008 (with Dan Grossman)
CSE548 Computer Systems Architecture, Winter 2008
CSE378 Machine Organization & Assembly Language, Fall 2007
Most of my research is in improving programmability, reliability and energy efficiency of multiprocessor and multicore systems, among some other distractions. It includes work in architecture, compilers, programming models, operating systems, and some other random areas. I am a proud member of the sampa group.
Some selected publications (full list):
"Alembic: Automatic Locality Extraction via Migration", OOPSLA 2014 (to appear).
"Symbolic Execution of Multithreaded Programs from Arbitrary Program Contexts", OOPSLA 2014 (to appear).
"General-Purpose Code Acceleration with Limited-Precision Analog Computation", ISCA 2014.
"Expressing and Verifying Probabilistic Assertions", PLDI 2014.
"Low-Level Detection of High-Level Data Races with LARD", ASPLOS 2014.
"Integrated 3D-Stacked Server Designs for Increasing Physical Density of Key-Value Stores", ASPLOS 2014.
"Approximate Storage in Solid-State Memories", MICRO 2013.
"EnerJ, the Language of Good-Enough Computing", IEEE Spectrum Feature Article.
"Input-Covering Schedules for Multithreaded Programs", OOPSLA 2013.
"DNA-based Molecular Architecture with Spatially Localized Components", ISCA 2013.
"Cooperative Empirical Failure Avoidance for Multithreaded Programs", ASPLOS 2013.
"DDOS: Taming Nondeterminism in Distributed Systems", ASPLOS 2013.
"Neural Acceleration for General-Purpose Approximate Programs", MICRO 2012 (Selected as IEEE Micro Top Picks).
"IFRit: Interference-Free Regions for Dynamic Data-Race Detection", OOPSLA 2012.
"RADISH: Always-On Sound and Complete Race Detection in Software and Hardware", ISCA 2012.
"Architectural Support for Disciplined Approximate Programming", ASPLOS 2012.
"On the Impact of Memory Models on Software Reliability in Multiprocessors", PODC 2011.
"EnerJ: Approximate Data Types for Safe and General Low-Power Computation", PLDI 2011.
"Isolating and Understanding Concurrency Errors Using Reconstructed Execution Fragments", PLDI 2011.
"Operating System Implications of Fast, Cheap, Non-Volatile Memory", Usenix HotOS 2011.
"RCDC: A Relaxed Consistency Deterministic Computer", ASPLOS 2011.
"Composable Specifications for Structured Shared-Memory Communication", OOPSLA 2010.
"Deterministic Process Groups in dOS", OSDI 2010.
"Conflict Exceptions: Providing Simple Concurrent Language Semantics with Precise Hardware Exceptions", ISCA 2010.
"ColorSafe: Architectural Support for Debugging and Dynamically Avoiding Multi-variable Atomicity Violations", ISCA 2010.
"CoreDet: A Compiler and Runtime System for Deterministic Multithreaded Execution", ASPLOS 2010.
"Finding Concurrency Bugs with Context-Aware Communication Graphs", MICRO 2009.
"The Bulk Multicore Architecture for Improved Programmability", CACM Dec'09.
"The Case for System Support for Concurrency Exceptions", USENIX HotPar 2009.
"DMP: Deterministic Shared Memory Multiprocessing", ASPLOS 2009. Selected for the IEEE Micro Top Picks 2009.
"Atom-Aid: Detecting and Surviving Atomicity Violations", ISCA 2008. Selected for the IEEE Micro Top Picks 2008.
"DeLorean: Recording and Deterministically Replaying Shared-Memory Multiprocessor Execution Efficiently", ISCA 2008. Selected for CACM Research Highlights 2009.
"SoftSig: Software-Exposed Hardware Signatures for Memory Disambiguation", ASPLOS 2008. Selected for the IEEE Micro Top Picks 2008.
"BulkSC: Bulk Enforcement of Sequential Consistency", ISCA 2007.
"Implicit Parallelism with Ordered Transactions", PPoPP 2007.
"Colorama: Architectural Support for Data-Centric Synchronization", HPCA 2007.
"Bulk Disambiguation of Speculative Threads in Multiprocessors ", ISCA 2006.
If you need a good architecture simulator, take a look at SESC, a very fast multiprocessor simulator. And here is a good way of choosing your next architecture or compiler conference.
We have recently reseased our Grappa runtime system for large-scale irregular applications (e.g., graph analytics), take a look!
We have also recetnly started publicizing approxbench.org, a set of tools and benchmarks for approximate computing research.
Take a look at the collectively written white-paper on 21st Century computer architecture research.
I am lucky to have my research supported by Microsoft, Intel, Google, Qualcomm, NetApp, NSF, and the Pacific Northwest National Laboratory. I am also a member of the Center for Future Architectures Research.I received an NSF CAREER Award and a Microsoft Research Faculty Fellowship to develop ideas on deterministic multiprocessing and multicore programmability in general. I am also the 2013 recipient of the IEEE TCCA Young Computer Architect Award.
I have the pleasure of working with the following incredible graduate students:Katelin Bailey
And postdoc Ben Ransford
Tom Bergan (PhD'14, now at Google)
Mike Ringenburg (PhD'14, now at Cray)
Nick Hunt (MS'12)
Hadi Emaseilzadeh (PhD'13, now Assistant Professor at Georgia Tech)
Brandon Lucia (PhD'13, now Researcher at Microsoft Research Redmond)
Joe Devietti (PhD'12, now Assistant Professor at UPenn)
Emily Fortuna (MS'11, first employment: Google)
Owen Anderson (MS'10, first employment: Apple)
Julian Knutsen (BS'10, first employment: Corensic)
Angda (Andy) Chen (BS'08 Honors, first employment: Amazon)
In 2008 I co-founded Corensic(former PetraVM) together with Mark Oskin and Peter Godman to commercialize technology initially developed at UW-CSE. I have recently co-founded another company, Konyac, to commercialize some magic we developed recently. More news on that soon.
I was born in São Paulo, Brazil.
I received my PhD in Computer Science from University of Illinois at Urbana-Champaign. I got my BEng and MEng in Electrical Engineering from University of São Paulo, Brazil.
I love to cook and eat.
I am very fortunate to have such a happy family.
My (much smarter than me) brother is freezing in Michigan but having fun with aerospace engineering.
I am always happy because she